The Ruoergai grassland is located in
the northern Sichuan bordering the
southern boundary of the basin in its upper reaches.
Meandering across the grassland is the Bai River
which joins Yellow River on the top part of the picture.
In 1936, the Red Army crossed the grassland on its way north
during the famous Long March.
Picture source: YRCC, Huanghe Liuyu Ditu Ji,
China Atlas Pub House, 1989.